<template>
<!-- 单选按钮 -->
    <div class="chooser-component">
        <ul class="chooser-list">
          <li
          v-for="(item, index) in selections"
          @click="chosenSelection(index)"
          :title="item.label"
          :class="{active:index === nowIndex}" 
          :key="index" 
          v-text="item.label"
          ></li>
        </ul>
    </div>
</template>

<script>
export default {
  props: {
    selections: {
      type: Array,
      default: [
        {
          label: "test",
          value: 0
        }
      ]
    }
  },
  data() {
    return {
      nowIndex: 0 // 单选，所以只需要一个值
    };
  },
  methods: {
    chosenSelection(index) {
      this.nowIndex = index;
      this.$emit("on-change", this.selections[index]);
    }
  }
};
</script>

<style scoped>
.chooser-component {
  position: relative;
  display: inline-block;
}
.chooser-list li {
  display: inline-block;
  border: 1px solid #e3e3e3;
  height: 25px;
  line-height: 25px;
  padding: 0 8px;
  margin-right: 5px;
  border-radius: 3px;
  text-align: center;
  cursor: pointer;
}
.chooser-list li.active {
  border-color: #4fc08d;
  background: #4fc08d;
  color: #fff;
}
</style>
